WebSVN - NaviCtrl - Diff - Rev 1 and 24

 #ifndef __fat16_h
 #define __fat16_h
 //________________________________________________________________________________________________________________________________________
 //
-// Definitions
+// Userspecific definitions
-//
-//________________________________________________________________________________________________________________________________________
+//
+//________________________________________________________________________________________________________________________________________
+#define         __MAX_FILES_USED        1       // The number of files that can be opened simultaneously.
+//________________________________________________________________________________________________________________________________________
+//
-//#define               __USE_TIME_DATE_ATTRIBUTE
+// Structure of a filepointer
-#define         __MAX_FILES_USED        2                               // The number of files that can accessed simultaneously.
+//
 //________________________________________________________________________________________________________________________________________
 #define         MBR_SECTOR      0                                               // the masterboot record is located in sector 0.
-#define         _UNUSED         1                                               // Bits used in the attribute of an directory entry.
+#define         _UNUSED         1               // Bits used in the attribute of an directory entry.
 #define         _USED           2
 #define         _ARCHIVE        2
+#define         _READ_ONLY      4
+#define         _SYSTEM         8
+#define         _DIRECTORY      16
+#define         _FILE           32
+typedef struct afile
+{
+        u32 start_cluster;                              // Sectorpointer to the first sector of the first datacluster of the file.
+        u32 cluster_pointer;                    // Pointer to the cluster which is edited at the moment.
+        u8      sector_index;                           // The sector which is edited at the moment (cluster_pointer + sector_index).
+        u16 byte_index;                                 // The bytelocation within the current sector (cluster_pointer + sector_index + byte_index).
+        u8      mode;                                           // mode of fileoperation (read,write)
+        u32 filesize;                                   // the size of the opend file in bytes.
+        u32 fileposition;                               // pointer to a character within the file 0 < fileposition < filesize
+        u32 sector_in_buffer;                   // the last sector read, wich is still in the sectorbuffer.
+        u32 directory_root_sector;              // pointer to the root of the
+        u32 directory_sector;                   // the sectorposition where the directoryentry has been made.
+        u8      directory_index;                        // the index to the directoryentry within the specified sector.
+        u8      attribute;                                      // the attribute of the file opened.
+        u8  buffer[512];                                // Buffer for read and write operation from or to the mmc.
+        u8      state;                                          // state of the filepointer (used/unused/...)
+} File;
 #define         _READ_ONLY      4
-#define         _SYSTEM         8
+typedef enum
-#define         _DIRECTORY      16
+{
-#define         _FILE           32
+        NOT_INITIALIZED,
         INITIALIZED
+}Fat16_VolumeState_t;
-//________________________________________________________________________________________________________________________________________
-//
-// Structure of a filepointer
-//
-//________________________________________________________________________________________________________________________________________
-typedef struct afile
-{
-        u32 start_cluster;                      // Sectorpointer to the first sector of the first datacluster of the file.
-        u32 cluster_pointer;            // Pointer to the cluster which is edited at the moment.
-        u8      sector_index;                   // The sector which is edited at the moment (cluster_pointer + sector_index).
+//________________________________________________________________________________________________________________________________________
-        u16 byte_index;                         // The bytelocation within the current sector (cluster_pointer + sector_index + byte_index).
-        u8      mode;                                   // mode of fileoperation (read,write)
-        u32 filesize;                           // the size of the opend file in bytes.
+//
-        u32 fileposition;                       // pointer to a character within the file 0 < fileposition < filesize
+// Structure of an item to find within the cwd
-        u32 sector_in_buffer;           // the last sector read, wich is still in the sectorbuffer.
+//
-        u32 directory_sector;           // the sectorposition where the directoryentry has been made.
+//________________________________________________________________________________________________________________________________________
         u8      directory_index;                // the index to the directoryentry within the specified sector.
-        u8      attribute;                              // the attribute of the file opened.
+struct volume
+{
+        Fat16_VolumeState_t     state;  // state of the volume
+} str_Volume;
+//________________________________________________________________________________________________________________________________________
+//
+// Structure of an item to find within the cwd
+//
+//________________________________________________________________________________________________________________________________________
+typedef struct find
+{
+        s8      name[12];                                       // filename + extension or directoryname of the item found within the cwd.
+        s8  searchstring[13];
+        u32 cluster_pointer;                    // Sectorpointer to the sector of the item searched within the cwd.
+        u16     startcluster;                           // pointer to the first datacluster of the item found in the cwd.
+        u32 filesize;                                   // the size of the opend file in bytes.
+        u32 directory_sector;                   // the sector within the actual cluster where the directoryentry was found.
+        u8      directory_index;                        // the index to the directoryentry within the specified sector.
+        u8      attribute;                                      // the attribute of the file opened.
-        u8  buffer[512];                        // Buffer for read and write operation from or to the mmc.
+} Find;
         u8      state;                                  // state of the filepointer (used/unused/...)
-} File;
+//________________________________________________________________________________________________________________________________________
+//
-//________________________________________________________________________________________________________________________________________
+// Directoryentries
 //
-// Structure of an directoryentry
+//________________________________________________________________________________________________________________________________________
 //
 //________________________________________________________________________________________________________________________________________
 struct DirEntry
+{
-        u8 name[8];                                             // 8 bytes name.
+        u8   name[8];                                   // 8 bytes name.
-        u8 extension[3];                                // 3 bytes extension.
+        u8   extension[3];                              // 3 bytes extension.
-        u8 attribute;                                   // attribute of the directory entry (unused,archive,read-only,system,directory,volume)
+        u8   attribute;                                 // attribute of the directory entry (unused,archive,read-only,system,directory,volume)
-        u8 reserved[10];                                // reserved bytes within the directory entry.
+        u8   reserved[10];                              // reserved bytes within the directory entry.
         u16  time;                                              // time and
         u16  date;                                              // date of last write acces to the file or directory.
         u16  startcluster;                              // first cluster of the file or directory.
-        u32 size;                                               // size of the file or directory in bytes.
+        u32  size;                                              // size of the file or directory in bytes.
-};
+} __attribute__((packed));
 //________________________________________________________________________________________________________________________________________
 //
 // Structure of an entry within the fileallocationtable.
+//
+//________________________________________________________________________________________________________________________________________
+struct FatEntry
+{
+        u16  next_cluster;                              // the next cluster of the file.
+}  __attribute__((packed));
+//________________________________________________________________________________________________________________________________________
+//
+// Partitions
+//
+//________________________________________________________________________________________________________________________________________
+#define _EMPTY                                                  0x00
+#define _FAT12                                                  0x01
-//
+#define _FAT16_ST_32_MB                                 0x04
-//________________________________________________________________________________________________________________________________________
+#define _EXTENDED                                               0x05
 #define _FAT16_LT_32_MB                                 0x06
-struct FatEntry
+#define _HPFS                                                   0x07
 #define _FAT32                                                  0x0B
 //
 // Structure of the MasterBootRecord
 //
 //________________________________________________________________________________________________________________________________________
+#define         _MBR_SECTOR     0               // The MasterBootRecord is located in sector 0
 struct MBR_Entry
+{
         u8  ExecutableCode[446];
         struct  PartitionEntry  PartitionEntry1;
 // API to the FAT16 filesystem
 //
 //________________________________________________________________________________________________________________________________________
 extern u8               InitFat16(void);
-extern File *   fopen_(u8 *fname,s8 mode);
+extern File *   fopen_(s8 *fname,s8 mode);
 extern s16              fflush_(File *file);
 extern void     fclose_(File *file);
 extern u32              fread_(void *buffer, u32 size, u32 count, File *file);
 extern u32              fwrite_(void *buffer, u32 size, u32 count, File *file);
 extern s16      fseek_(File *file, s32 offset, s16 origin);
-extern          s16     fgetchar_(File *file);
+extern s16              fgetchar_(File *file);
 extern u8               fputchar_(File *file,s8 c);
 extern u8               fputs_(File *file,s8 *string);
 extern s8 *     fgets_(s8 *s, s16 count, File *file);
 extern s16              frename_(s8 *oldname, s8 *newname);
+extern u8               fexist_(s8 *fname);
+extern u8               mkdir_(s8 *fname);
+extern u8               chdir_(s8 *fname);
+extern u8               findfirst_(s8 *fname, Find *item, u8 attribute);
+extern u8               findnext_(Find *item);
+extern u16              feof_(File *);
 extern u8               fexist_(u8*fname);
 //________________________________________________________________________________________________________________________________________
 //
 // Functions needed internaly for the fat16 implementation
+//
-//
+//________________________________________________________________________________________________________________________________________
 //________________________________________________________________________________________________________________________________________
-extern u8               CreateDirectoryEntry(u8*fname, u16 cluster, File *file,u8 attrib);
+extern u8               SeekFileInDirectory(s8*fname, File *file);
-extern u16              FindNextFreeCluster(File *file);
+extern u8               CreateFileInDirectory(s8*fname, File *file);
-extern u8               SeekDirectoryEntry(u8*fname, File *file);
+extern u16              FindNextFreeCluster(File *file);
-extern void     SeperateFileName(u8*fname, u8*name);
+extern void     SeperateFileName(s8*fname, s8*name);
-extern u8               ScanSubDirectories(u8*fname, File *file);
+extern u8               ScanSubDirectories(s8*fname, File *file);
 extern u16      GetNextCluster(File *file);
-extern u8               AppendCluster(File *file);
+extern u8               AppendCluster(File *file);
+extern u16              GetFatClusterOffset(File *file);
+extern u16              GetFatSectorIndex(File *file);
+extern File *   ReserveFilePointer(void);
+extern u16              SeekSubDirectory(s8 *fname);
-extern u16              GetFatClusterOffset(File *file);
+extern u8               CreateSubDirectory_(s8 *fname);
-extern u16              GetFatSectorIndex(File *file);
+extern u8               FindItem(Find *);
 extern void     FreeFilePointer(File *file);
 //________________________________________________________________________________________________________________________________________
 //
 // Vaiables needed internaly for the fat16 implementation
+//
+//________________________________________________________________________________________________________________________________________
-//
 //________________________________________________________________________________________________________________________________________

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